exam 3 review lecture
... • In addition to a closed, or positive curvature of space, there are two other options – Space could be flat, or have zero curvature – Space could be curved away from itself, or have negative curvature – Geometry behaves differently with each curvature! 13 Dec 2007 ...
... • In addition to a closed, or positive curvature of space, there are two other options – Space could be flat, or have zero curvature – Space could be curved away from itself, or have negative curvature – Geometry behaves differently with each curvature! 13 Dec 2007 ...
Ch13_Lecture - Chemistry at Winthrop University
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
Sun - El Camino College
... Most of the light we see from the Sun is emitted because the Sun resembles a blackbody. That means the Sun shines light because it is hot. There are two important properties of blackbodies. One (Stefan’s law) is that hotter things shine more light. (Mathematically, the power emitted per area depends ...
... Most of the light we see from the Sun is emitted because the Sun resembles a blackbody. That means the Sun shines light because it is hot. There are two important properties of blackbodies. One (Stefan’s law) is that hotter things shine more light. (Mathematically, the power emitted per area depends ...
distances of stars.
... A star’s proper motion is its a) true motion in space. b) apparent shift as we view from opposite sides of Earth’s orbit every 6 months. c) annual apparent motion across the sky. d) motion toward or away from us, revealed by Doppler shifts. e) orbital motion around the Galaxy. Explanation: A star’s ...
... A star’s proper motion is its a) true motion in space. b) apparent shift as we view from opposite sides of Earth’s orbit every 6 months. c) annual apparent motion across the sky. d) motion toward or away from us, revealed by Doppler shifts. e) orbital motion around the Galaxy. Explanation: A star’s ...
Triangulation Trigonometric Parallax
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
The Milky Way - University of North Texas
... b. Objects below this mass can only form in HI clouds. c. Objects below this mass are not hot enough to fuse normal hydrogen. d. They form too slowly and hot stars nearby clear the gas and dust quickly. e. Our telescopes do not have enough light gathering power to detect dim objects. ...
... b. Objects below this mass can only form in HI clouds. c. Objects below this mass are not hot enough to fuse normal hydrogen. d. They form too slowly and hot stars nearby clear the gas and dust quickly. e. Our telescopes do not have enough light gathering power to detect dim objects. ...
Stars in Their Youth
... could be fused using carbon as a catalyst. However, von Weizsäcker did not work out the rate at which energy could be produced in the stars using this CNO cycle or how this rate would depend on the temperature that obtains in the stars. The credit for this must go to Hans Bethe, the acknowledged mas ...
... could be fused using carbon as a catalyst. However, von Weizsäcker did not work out the rate at which energy could be produced in the stars using this CNO cycle or how this rate would depend on the temperature that obtains in the stars. The credit for this must go to Hans Bethe, the acknowledged mas ...
Performance of the Hobby-Eberly Telescope and facility instruments
... University, Georg-August-Universität, Göttingen, and Ludwig-Maximillians-Universität, Munich. The pupil is 9.2 m in diameter, and sweeps over the primary mirror as the x-y tracker follows objects for between 40 minutes (in the south at δ = -10.3o) and 2.8 hours (in the north at δ = +71.6o). The maxi ...
... University, Georg-August-Universität, Göttingen, and Ludwig-Maximillians-Universität, Munich. The pupil is 9.2 m in diameter, and sweeps over the primary mirror as the x-y tracker follows objects for between 40 minutes (in the south at δ = -10.3o) and 2.8 hours (in the north at δ = +71.6o). The maxi ...
What CAN You See With a Telescope?
... Asteroids are now numbered in the order in which they were discovered. Can see that the relative brightness of the first four asteroids may have been a factor in their early discovery? Even Ceres, the brightest asteroid, is only a moderately bright star when seen through a telescope! Most asteroid ...
... Asteroids are now numbered in the order in which they were discovered. Can see that the relative brightness of the first four asteroids may have been a factor in their early discovery? Even Ceres, the brightest asteroid, is only a moderately bright star when seen through a telescope! Most asteroid ...
flat field determinations using an isolated point source
... The photometry for 13167, as derived according to the above recipe from the _raw images without overscan, differs from the pipeline _crj results by 0.0005 in any of the 52 measured C/P values. Consequently, 13602 uses 400x400 pixel sub-arrays without overscan at all 26 field positions for both the ...
... The photometry for 13167, as derived according to the above recipe from the _raw images without overscan, differs from the pipeline _crj results by 0.0005 in any of the 52 measured C/P values. Consequently, 13602 uses 400x400 pixel sub-arrays without overscan at all 26 field positions for both the ...
Diapositiva 1
... of the evolutionary equations, which require as well the introduction of stellar evolutionary models (see Claret et al. 1995, Claret et Cunha 1997) Both theories are for quasi-circular & quasisynchronized orbits. Tassoul introduces an arbitrary factor (~10-40) in the timescales. The strong dependenc ...
... of the evolutionary equations, which require as well the introduction of stellar evolutionary models (see Claret et al. 1995, Claret et Cunha 1997) Both theories are for quasi-circular & quasisynchronized orbits. Tassoul introduces an arbitrary factor (~10-40) in the timescales. The strong dependenc ...
CHP 10
... c. is composed of neutral hydrogen and a fairly dense concentration of dust. d. produces large amounts of 21-cm radiation. e. produces radio waves from CO and other molecules. _______________ is/are believed to be produced by supernova explosions. a. Coronal gas b. HI clouds c. Molecular clouds d. R ...
... c. is composed of neutral hydrogen and a fairly dense concentration of dust. d. produces large amounts of 21-cm radiation. e. produces radio waves from CO and other molecules. _______________ is/are believed to be produced by supernova explosions. a. Coronal gas b. HI clouds c. Molecular clouds d. R ...
ph700-yso-jets10
... (YSOs). While there has been substantial data collected based on the methodology of identifying and thus detecting these radio jets, their exact nature is unknown and its context in terms of a star's life remains a mystery. Furthermore there is no coherent picture of these radio emissions because wh ...
... (YSOs). While there has been substantial data collected based on the methodology of identifying and thus detecting these radio jets, their exact nature is unknown and its context in terms of a star's life remains a mystery. Furthermore there is no coherent picture of these radio emissions because wh ...
The Interstellar Medium
... e. produces radio waves from CO and other molecules. _______________ is/are believed to be produced by supernova explosions. a. Coronal gas b. HI clouds c. Molecular clouds d. Reflection nebulae e. Dark nebulae The composition of the interstellar dust suggests that it is a. primarily produced by emi ...
... e. produces radio waves from CO and other molecules. _______________ is/are believed to be produced by supernova explosions. a. Coronal gas b. HI clouds c. Molecular clouds d. Reflection nebulae e. Dark nebulae The composition of the interstellar dust suggests that it is a. primarily produced by emi ...
Spectroscopy
... Spectroscopy This exercise will give you an idea of how to extract a spectrum from an image obtained with a spectrograph. Spectra enable us to learn of the composition of the atmospheres of stars, planets, comets, and other astronomical objects. Spectroscopy is a very important branch of astronomy. ...
... Spectroscopy This exercise will give you an idea of how to extract a spectrum from an image obtained with a spectrograph. Spectra enable us to learn of the composition of the atmospheres of stars, planets, comets, and other astronomical objects. Spectroscopy is a very important branch of astronomy. ...
M104: The Sombrero Galaxy
... (M104). Thick dust lanes make up the brim of the galaxy. The brim winds into the brilliant white crown, made up of a central bulge of older stars. These stars are much like those in the middle of our own Milky Way Galaxy. As seen from Earth, this galactic hat is tilted nearly edge-on, emphasizing a ...
... (M104). Thick dust lanes make up the brim of the galaxy. The brim winds into the brilliant white crown, made up of a central bulge of older stars. These stars are much like those in the middle of our own Milky Way Galaxy. As seen from Earth, this galactic hat is tilted nearly edge-on, emphasizing a ...
A Jupiter-mass companion to a solar-type star
... of periodic variations in the star's radial velocity. The companion lies only about eight million kilometres from the star, which would be well inside the orbit of Mercury in our Solar System. This object might be a gas-giant planet that has migrated to this location through orbital evolution, or fr ...
... of periodic variations in the star's radial velocity. The companion lies only about eight million kilometres from the star, which would be well inside the orbit of Mercury in our Solar System. This object might be a gas-giant planet that has migrated to this location through orbital evolution, or fr ...
the PDF - Vassar`s Special Collections
... provide a precise narrow line with which to mark the exact position of a star or comet while noting the time of the night. The old Observatory, which now houses the Education Department, has an entryway filled with quotes by Maria Mitchell and photographs of her with her students. Orbit calculations ...
... provide a precise narrow line with which to mark the exact position of a star or comet while noting the time of the night. The old Observatory, which now houses the Education Department, has an entryway filled with quotes by Maria Mitchell and photographs of her with her students. Orbit calculations ...
Light and shadow from distant worlds
... the radius of Mercury’s orbit in our own Solar System. The exoplanet, 51 Peg b, was discovered by measuring the line-of-sight (radial) velocity of the star as it orbited the centre-of-mass of the system. The magnitude of this velocity reflex yields—via conservation of momentum—the planet mass times ...
... the radius of Mercury’s orbit in our own Solar System. The exoplanet, 51 Peg b, was discovered by measuring the line-of-sight (radial) velocity of the star as it orbited the centre-of-mass of the system. The magnitude of this velocity reflex yields—via conservation of momentum—the planet mass times ...
transitofvenus
... It is well known that this distance of the sun from the earth, is supposed different by different astronomers. Ptolemy and his followers, as also Copernicus and Tycho Brahe, have computed it at 1200 semi-diameters of the earth, and Kepler at almost 3500; Riccioli doubles this last distance, and Heve ...
... It is well known that this distance of the sun from the earth, is supposed different by different astronomers. Ptolemy and his followers, as also Copernicus and Tycho Brahe, have computed it at 1200 semi-diameters of the earth, and Kepler at almost 3500; Riccioli doubles this last distance, and Heve ...
Mission 1 - NC State University
... The Sun is a ball of gas made mostly of two gasses: hydrogen and helium. Helium is what goes into balloons to make them float. The Sun is always working to change hydrogen to helium. The Sun makes the light that we see and the heat that we feel when we are outside during the day. The Sun is one of m ...
... The Sun is a ball of gas made mostly of two gasses: hydrogen and helium. Helium is what goes into balloons to make them float. The Sun is always working to change hydrogen to helium. The Sun makes the light that we see and the heat that we feel when we are outside during the day. The Sun is one of m ...
10 New Constellations
... The number next to each star is its apparent magnitude, its brightness from our point of view on Earth, the lower the number the brighter the star in the night sky. Alkaid Also known as Eta Ursae Majoris, Alkaid is a bluish-white main sequence star with surface temperatures around 3 times that of th ...
... The number next to each star is its apparent magnitude, its brightness from our point of view on Earth, the lower the number the brighter the star in the night sky. Alkaid Also known as Eta Ursae Majoris, Alkaid is a bluish-white main sequence star with surface temperatures around 3 times that of th ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.